MECHANISM OF EXTRACTION AND STRIPPING OF Fe(Ⅲ) WITH PRIMARY AMINE N1923 AS EXTRACTANT AND n-OCTANE AS DILUENT

摘要

Mechanism of extraction of Fe （III） from sulphate solution by primary amine N1923 andstripping of Fe loaded organic phase with dilute H₂SO₄ was investigated. The organic phasewas characterized by FT-IR and photon correlation spectroscopy. The composition of extractedspecies as well as the content of H₂O in organic phase were determined. The dependenceof both the rate of extraction and stripping on the formation of reverse micelle in primaryamine （N1923）system has been confirmed. It is shown that the extraction of Fe（III） by primary amine sulphate may be related to the adduct formation or cation exchange reaction underdifferent concentrations of H₂SO₄ in aqueous solution.